C1S170 Week 5 Sample Quiz in C# – 35/35 marks

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Problem Statement
1. Question : (TCO 11) An array is a list of data items that _____.

share the same data type

are all integers

have different names

are not indexed

2. Question : (TCO 11) An array that stores five days of closing stock prices can be declared as _____.

decimal price1, price2, price3, price4, price5;

decimal [] price = new decimal[5];

decimal price[] = new decimal[5];

decimal [] price = new price[5];

3. Question : (TCO 11) Which statement is not true about this array declaration?

int [] myArray = {1,4,3,5,6};

It declares a one-dimensional array.

Its elements are indexed 0 thru 4.

It sets the element myArray[1] to 1.

It will compile.

4. Question : (TCO 11) Given the following declaration, what is/are the value(s) of initial[1,0]?

char[,] initial = { {‘C’, ‘D’, ‘E’, ‘F’},
{‘G’, ‘H’, ‘I’, ‘J’} };

‘C’

‘G’

‘G’ ‘C’

‘C’ ‘G’

5. Question : (TCO 11) In the following code, the “foreach” statement _____.

int[] size = {2,3,5,6,4,5};
foreach (int
val in size)
Console.Write(“{0} “,val);

reads each element of the array

converts each array element to an integer

returns the memory address of each array element

prints the index of each array element

6. Question : (TCO 11) What will be the output of this code?

int[] size = {2,3,5,6,4,5};
Array.Sort(size);
foreach (int
val in size)
Console.Write(“{0} “, val);

2 3 5 6 4 5

5 4 6 5 3 2

6 5 5 4 3 2

2 3 4 5 5 6

7. Question : (TCO 11) When the name of an array, such as myArray, is passed to a method, the method receives _____.

a copy of the value the first element stores

the starting address of the array

the address of each array element

a copy of the array

8. Question : (TCO 11) To pass the entire myData array to the DisplayItems method, replace the commented line below with _____.

static void
Main()
{
int[] myData = new int[4]{1,2,3,4};
//call DisplayItems
}
public static void DisplayItems(params
int[] item)
{
for (int i=0; i Console.Write("{0} ",item[i]);
}

DisplayItems(ref myData);

DisplayItems(myData[0]);

DisplayItems(myData);

DisplayItems(1,2,3,4);

9. Question : (TCO 12) The size of a(n) _____ can be determined when the program is written or at runtime, whereas the size of a(n) _____ must be determined when the program is written.

ArrayList, array

array, ArrayList

array, Array class

Array class, array

10. Question : (TCO 12) In your program, myList was declared as an ArrayList. To append the number 7 to the end of myList, write _____.

myList.Add(7);

myList.Append(7);

myList.Insert(7);

myList.Set(7);

11. Question : (TCO 11) Write a C# program to store an array of these integers: 11,22,33,44,55. Use an appropriate loop to add all of the values in the list. Print out the sum.

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